For connection to the mains supply of 1 or up to 10 series connected lamps; press the cord switch to turn them all on and off simultaneously. http://www.ikea.com/au/en/images/products/ansluta-power-supply-cord__0276125_PE417035_S4.JPGANSLUTA Power supply cordhttp://www.ikea.com/au/en/catalog/products/70121414/701.214.14IKEA$5